/etc/init.d/ifplugdupdown.sh, contains ifpulgd_preup and ifplugd_postdown

ifplugdupdown.sh (text/plain), 2.72 KB, created by derf on 2004-05-26 09:00:19 UTC

#!/sbin/runscript
#NB: Config is in /etc/conf.d/ifplugd

#From /etc/init.d/net.eth0:
if [[ -n "$NET_DEBUG" ]]; then
        set -x
        devnull=/dev/stderr
else
        devnull=/dev/null
fi

#From /etc/init.d/net.eth0:
# Fix bug 50039 (init.d/net.eth0 localization)
# Some other commands in this script might need to be wrapped, but
# we'll get them one-by-one.  Note that LC_ALL trumps LC_anything_else
# according to locale(7)
ifconfig() {
        LC_ALL=C /sbin/ifconfig "$@"
}

# ifplugd_preup: If the interface is being managed by ifplugd, then it has
# been left up, but unconfigured. We bring it down here to ensure that it gets
# assigned the proper default IPV6 address and to ensure that it gets
# configured properly.
ifplugd_preup() {
        local IFACE=${1} status_iface
	# Unlike status_IFACE in net.eth0, for ifplugd interfaces, they are
	# only considered up if they have an address. We check here for such
	# interfaces and leave them up if they are already configured.
	status_iface="$(ifconfig ${1} 2>${devnull} | \
	 gawk '/addr:/{a=1}/ UP /{ if (a == 1) print "up"}')"
	if [[ status_iface != "up" && -r /etc/conf.d/ifplugd && \
	 -x /etc/init.d/ifplugd ]] && service_started ifplugd ; then
                . /etc/conf.d/ifplugd
	        if [[ "${INTERFACES}" = "auto" || \
		 "${INTERFACES/.*${IFACE}.*}" = "${IFACE}" ]] ; then
			if [[ "${2}" != "-q" ]] ; then
			        ebegin "Taking ${IFACE} down to be configured"
			fi
                        ifconfig ${IFACE} down
			if [[ "${2}" != "-q" ]] ; then
			        eend $?
			fi
		fi
	fi
}

# ifplugd_postdown: After an interface is brought down, if the interface is
# being managed by ifplugd, and ifplugd is running, then we leave it up, but
# unconfigured, so that ifplugd can receive events from it.
ifplugd_postdown() {
        local IFACE="${1}" inet6 x
	if [[ -r /etc/conf.d/ifplugd && -x /etc/init.d/ifplugd ]] && \
	 service_started ifplugd ; then
                . /etc/conf.d/ifplugd
	        if [[ "${INTERFACES}" = "auto" || \
		 "${INTERFACES/.*${IFACE}.*}" = "${IFACE}" ]] ; then

			if [[ "${2}" != "-q" ]] ; then
			        ebegin "Bringing ${IFACE} up unconfigured to \
listen for link beat events"
                        fi
                        ifconfig "${IFACE}" 0.0.0.0
		        ifconfig "${IFACE}" up

			# Delete the default inet6 address for this interface.
			inet6="$(ifconfig ${IFACE} | \
			 awk '$1 == "inet6" {print $3}')"
			if [[ -n "${inet6}" ]]; then
				for x in ${inet6}; do 
					ifconfig "${IFACE}" inet6 del "${x}"
				done
			fi

			if [[ "${2}" != "-q" ]] ; then
			        # Report success if the interface is up.
			        [[ "$(ifconfig ${IFACE} 2>${devnull} | \
			         gawk '$1 == "UP" {print "up"}')" = "up" ]]
			        eend $?
			fi
		fi
        fi
}